CVE-2026-72403
- Source
- https://cve.org/CVERecord?id=CVE-2026-72403
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72403.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-72403
- Downstream
- Published
- 2026-08-15T05:56:27Z
- Modified
- 2026-08-18T03:30:56Z
- Summary
- ALSA: FCP: Fix NULL pointer dereference in interface lookup
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ALSA: FCP: Fix NULL pointer dereference in interface lookup
A malformed USB device can provide a vendor-specific interface without any endpoint descriptors. fcp_find_fc_interface() currently selects the first vendor-specific interface and reads endpoint 0 from it, without checking whether the interface actually has any endpoints.
When bNumEndpoints is zero, no endpoint array is allocated for the parsed alternate setting, so get_endpoint(..., 0) yields an invalid endpoint descriptor pointer. Dereferencing it through usb_endpoint_num() then triggers a NULL pointer dereference.
Skip vendor-specific interfaces that do not have any endpoints.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72403.json" }- References
-
- https://git.kernel.org/stable/c/3ab06151ffcb8c3aeb8f78508658b6c0f05be932
- https://git.kernel.org/stable/c/e1e31e0ec8a609e17fd2e86b77bc00d9cbb24d7c
- https://git.kernel.org/stable/c/f28d7b5f1578a7501ab17b10643ed1e4f729187e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72403.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-72403
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git